| /* |
| * Line6 Linux USB driver - 0.9.0 |
| * |
| * Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at) |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation, version 2. |
| * |
| */ |
| |
| #include <linux/slab.h> |
| #include <sound/core.h> |
| #include <sound/control.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| |
| #include "audio.h" |
| #include "capture.h" |
| #include "driver.h" |
| #include "playback.h" |
| #include "pod.h" |
| |
| |
| #ifdef CONFIG_LINE6_USB_IMPULSE_RESPONSE |
| |
| static struct snd_line6_pcm* dev2pcm(struct device *dev) |
| { |
| struct usb_interface *interface = to_usb_interface(dev); |
| struct usb_line6 *line6 = usb_get_intfdata(interface); |
| struct snd_line6_pcm *line6pcm = line6->line6pcm; |
| return line6pcm; |
| } |
| |
| /* |
| "read" request on "impulse_volume" special file. |
| */ |
| static ssize_t pcm_get_impulse_volume(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return sprintf(buf, "%d\n", dev2pcm(dev)->impulse_volume); |
| } |
| |
| /* |
| "write" request on "impulse_volume" special file. |
| */ |
| static ssize_t pcm_set_impulse_volume(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct snd_line6_pcm *line6pcm = dev2pcm(dev); |
| int value = simple_strtoul(buf, NULL, 10); |
| line6pcm->impulse_volume = value; |
| |
| if(value > 0) |
| line6_pcm_start(line6pcm, MASK_PCM_IMPULSE); |
| else |
| line6_pcm_stop(line6pcm, MASK_PCM_IMPULSE); |
| |
| return count; |
| } |
| |
| /* |
| "read" request on "impulse_period" special file. |
| */ |
| static ssize_t pcm_get_impulse_period(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| return sprintf(buf, "%d\n", dev2pcm(dev)->impulse_period); |
| } |
| |
| /* |
| "write" request on "impulse_period" special file. |
| */ |
| static ssize_t pcm_set_impulse_period(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| dev2pcm(dev)->impulse_period = simple_strtoul(buf, NULL, 10); |
| return count; |
| } |
| |
| static DEVICE_ATTR(impulse_volume, S_IWUGO | S_IRUGO, pcm_get_impulse_volume, pcm_set_impulse_volume); |
| static DEVICE_ATTR(impulse_period, S_IWUGO | S_IRUGO, pcm_get_impulse_period, pcm_set_impulse_period); |
| |
| #endif |
| |
| int line6_pcm_start(struct snd_line6_pcm *line6pcm, int channels) |
| { |
| unsigned long flags_old = __sync_fetch_and_or(&line6pcm->flags, channels); |
| unsigned long flags_new = flags_old | channels; |
| int err = 0; |
| |
| #if LINE6_BACKUP_MONITOR_SIGNAL |
| if (!(line6pcm->line6->properties->capabilities & LINE6_BIT_HWMON)) { |
| line6pcm->prev_fbuf = kmalloc(LINE6_ISO_PACKETS * line6pcm->max_packet_size, GFP_KERNEL); |
| |
| if (!line6pcm->prev_fbuf) { |
| dev_err(line6pcm->line6->ifcdev, "cannot malloc monitor buffer\n"); |
| return -ENOMEM; |
| } |
| } |
| #else |
| line6pcm->prev_fbuf = NULL; |
| #endif |
| |
| if (((flags_old & MASK_CAPTURE) == 0) && |
| ((flags_new & MASK_CAPTURE) != 0)) { |
| /* |
| Waiting for completion of active URBs in the stop handler is |
| a bug, we therefore report an error if capturing is restarted |
| too soon. |
| */ |
| if(line6pcm->active_urb_in | line6pcm->unlink_urb_in) |
| return -EBUSY; |
| |
| line6pcm->buffer_in = kmalloc(LINE6_ISO_BUFFERS * LINE6_ISO_PACKETS * line6pcm->max_packet_size, GFP_KERNEL); |
| |
| if (!line6pcm->buffer_in) { |
| dev_err(line6pcm->line6->ifcdev, "cannot malloc capture buffer\n"); |
| return -ENOMEM; |
| } |
| |
| line6pcm->count_in = 0; |
| line6pcm->prev_fsize = 0; |
| err = line6_submit_audio_in_all_urbs(line6pcm); |
| |
| if (err < 0) { |
| __sync_fetch_and_and(&line6pcm->flags, ~channels); |
| return err; |
| } |
| } |
| |
| if (((flags_old & MASK_PLAYBACK) == 0) && |
| ((flags_new & MASK_PLAYBACK) != 0)) { |
| /* |
| See comment above regarding PCM restart. |
| */ |
| if(line6pcm->active_urb_out | line6pcm->unlink_urb_out) |
| return -EBUSY; |
| |
| line6pcm->buffer_out = kmalloc(LINE6_ISO_BUFFERS * LINE6_ISO_PACKETS * line6pcm->max_packet_size, GFP_KERNEL); |
| |
| if (!line6pcm->buffer_out) { |
| dev_err(line6pcm->line6->ifcdev, "cannot malloc playback buffer\n"); |
| return -ENOMEM; |
| } |
| |
| line6pcm->count_out = 0; |
| err = line6_submit_audio_out_all_urbs(line6pcm); |
| |
| if (err < 0) { |
| __sync_fetch_and_and(&line6pcm->flags, ~channels); |
| return err; |
| } |
| } |
| |
| return 0; |
| } |
| |
| int line6_pcm_stop(struct snd_line6_pcm *line6pcm, int channels) |
| { |
| unsigned long flags_old = __sync_fetch_and_and(&line6pcm->flags, ~channels); |
| unsigned long flags_new = flags_old & ~channels; |
| |
| if (((flags_old & MASK_CAPTURE) != 0) && |
| ((flags_new & MASK_CAPTURE) == 0)) { |
| line6_unlink_audio_in_urbs(line6pcm); |
| kfree(line6pcm->buffer_in); |
| line6pcm->buffer_in = NULL; |
| } |
| |
| if (((flags_old & MASK_PLAYBACK) != 0) && |
| ((flags_new & MASK_PLAYBACK) == 0)) { |
| line6_unlink_audio_out_urbs(line6pcm); |
| kfree(line6pcm->buffer_out); |
| line6pcm->buffer_out = NULL; |
| } |
| |
| #if LINE6_BACKUP_MONITOR_SIGNAL |
| if (line6pcm->prev_fbuf != NULL) |
| kfree(line6pcm->prev_fbuf); |
| #endif |
| |
| return 0; |
| } |
| |
| /* trigger callback */ |
| int snd_line6_trigger(struct snd_pcm_substream *substream, int cmd) |
| { |
| struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream); |
| struct snd_pcm_substream *s; |
| int err; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&line6pcm->lock_trigger, flags); |
| clear_bit(BIT_PREPARED, &line6pcm->flags); |
| |
| snd_pcm_group_for_each_entry(s, substream) { |
| switch (s->stream) { |
| case SNDRV_PCM_STREAM_PLAYBACK: |
| err = snd_line6_playback_trigger(line6pcm, cmd); |
| |
| if (err < 0) { |
| spin_unlock_irqrestore(&line6pcm->lock_trigger, |
| flags); |
| return err; |
| } |
| |
| break; |
| |
| case SNDRV_PCM_STREAM_CAPTURE: |
| err = snd_line6_capture_trigger(line6pcm, cmd); |
| |
| if (err < 0) { |
| spin_unlock_irqrestore(&line6pcm->lock_trigger, |
| flags); |
| return err; |
| } |
| |
| break; |
| |
| default: |
| dev_err(line6pcm->line6->ifcdev, "Unknown stream direction %d\n", |
| s->stream); |
| } |
| } |
| |
| spin_unlock_irqrestore(&line6pcm->lock_trigger, flags); |
| return 0; |
| } |
| |
| /* control info callback */ |
| static int snd_line6_control_playback_info(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_info *uinfo) |
| { |
| uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| uinfo->count = 2; |
| uinfo->value.integer.min = 0; |
| uinfo->value.integer.max = 256; |
| return 0; |
| } |
| |
| /* control get callback */ |
| static int snd_line6_control_playback_get(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| int i; |
| struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol); |
| |
| for (i = 2; i--;) |
| ucontrol->value.integer.value[i] = line6pcm->volume_playback[i]; |
| |
| return 0; |
| } |
| |
| /* control put callback */ |
| static int snd_line6_control_playback_put(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| int i, changed = 0; |
| struct snd_line6_pcm *line6pcm = snd_kcontrol_chip(kcontrol); |
| |
| for (i = 2; i--;) |
| if (line6pcm->volume_playback[i] != ucontrol->value.integer.value[i]) { |
| line6pcm->volume_playback[i] = ucontrol->value.integer.value[i]; |
| changed = 1; |
| } |
| |
| return changed; |
| } |
| |
| /* control definition */ |
| static struct snd_kcontrol_new line6_control_playback = { |
| .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
| .name = "PCM Playback Volume", |
| .index = 0, |
| .access = SNDRV_CTL_ELEM_ACCESS_READWRITE, |
| .info = snd_line6_control_playback_info, |
| .get = snd_line6_control_playback_get, |
| .put = snd_line6_control_playback_put |
| }; |
| |
| /* |
| Cleanup the PCM device. |
| */ |
| static void line6_cleanup_pcm(struct snd_pcm *pcm) |
| { |
| int i; |
| struct snd_line6_pcm *line6pcm = snd_pcm_chip(pcm); |
| |
| #ifdef CONFIG_LINE6_USB_IMPULSE_RESPONSE |
| device_remove_file(line6pcm->line6->ifcdev, &dev_attr_impulse_volume); |
| device_remove_file(line6pcm->line6->ifcdev, &dev_attr_impulse_period); |
| #endif |
| |
| for (i = LINE6_ISO_BUFFERS; i--;) { |
| if (line6pcm->urb_audio_out[i]) { |
| usb_kill_urb(line6pcm->urb_audio_out[i]); |
| usb_free_urb(line6pcm->urb_audio_out[i]); |
| } |
| if (line6pcm->urb_audio_in[i]) { |
| usb_kill_urb(line6pcm->urb_audio_in[i]); |
| usb_free_urb(line6pcm->urb_audio_in[i]); |
| } |
| } |
| } |
| |
| /* create a PCM device */ |
| static int snd_line6_new_pcm(struct snd_line6_pcm *line6pcm) |
| { |
| struct snd_pcm *pcm; |
| int err; |
| |
| err = snd_pcm_new(line6pcm->line6->card, |
| (char *)line6pcm->line6->properties->name, |
| 0, 1, 1, &pcm); |
| if (err < 0) |
| return err; |
| |
| pcm->private_data = line6pcm; |
| pcm->private_free = line6_cleanup_pcm; |
| line6pcm->pcm = pcm; |
| strcpy(pcm->name, line6pcm->line6->properties->name); |
| |
| /* set operators */ |
| snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, |
| &snd_line6_playback_ops); |
| snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, |
| &snd_line6_capture_ops); |
| |
| /* pre-allocation of buffers */ |
| snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, |
| snd_dma_continuous_data(GFP_KERNEL), |
| 64 * 1024, 128 * 1024); |
| |
| return 0; |
| } |
| |
| /* PCM device destructor */ |
| static int snd_line6_pcm_free(struct snd_device *device) |
| { |
| return 0; |
| } |
| |
| /* |
| Stop substream if still running. |
| */ |
| static void pcm_disconnect_substream(struct snd_pcm_substream *substream) |
| { |
| if(substream->runtime && snd_pcm_running(substream)) { |
| snd_pcm_stop(substream, SNDRV_PCM_STATE_DISCONNECTED); |
| } |
| } |
| |
| /* |
| Stop PCM stream. |
| */ |
| void line6_pcm_disconnect(struct snd_line6_pcm *line6pcm) |
| { |
| pcm_disconnect_substream(get_substream(line6pcm, SNDRV_PCM_STREAM_CAPTURE)); |
| pcm_disconnect_substream(get_substream(line6pcm, SNDRV_PCM_STREAM_PLAYBACK)); |
| line6_unlink_wait_clear_audio_out_urbs(line6pcm); |
| line6_unlink_wait_clear_audio_in_urbs(line6pcm); |
| } |
| |
| /* |
| Create and register the PCM device and mixer entries. |
| Create URBs for playback and capture. |
| */ |
| int line6_init_pcm(struct usb_line6 *line6, |
| struct line6_pcm_properties *properties) |
| { |
| static struct snd_device_ops pcm_ops = { |
| .dev_free = snd_line6_pcm_free, |
| }; |
| |
| int err; |
| int ep_read = 0, ep_write = 0; |
| struct snd_line6_pcm *line6pcm; |
| |
| if (!(line6->properties->capabilities & LINE6_BIT_PCM)) |
| return 0; /* skip PCM initialization and report success */ |
| |
| /* initialize PCM subsystem based on product id: */ |
| switch (line6->product) { |
| case LINE6_DEVID_BASSPODXT: |
| case LINE6_DEVID_BASSPODXTLIVE: |
| case LINE6_DEVID_BASSPODXTPRO: |
| case LINE6_DEVID_PODXT: |
| case LINE6_DEVID_PODXTLIVE: |
| case LINE6_DEVID_PODXTPRO: |
| ep_read = 0x82; |
| ep_write = 0x01; |
| break; |
| |
| case LINE6_DEVID_PODX3: |
| case LINE6_DEVID_PODX3LIVE: |
| ep_read = 0x86; |
| ep_write = 0x02; |
| break; |
| |
| case LINE6_DEVID_POCKETPOD: |
| ep_read = 0x82; |
| ep_write = 0x02; |
| break; |
| |
| case LINE6_DEVID_GUITARPORT: |
| case LINE6_DEVID_PODSTUDIO_GX: |
| case LINE6_DEVID_PODSTUDIO_UX1: |
| case LINE6_DEVID_PODSTUDIO_UX2: |
| case LINE6_DEVID_TONEPORT_GX: |
| case LINE6_DEVID_TONEPORT_UX1: |
| case LINE6_DEVID_TONEPORT_UX2: |
| ep_read = 0x82; |
| ep_write = 0x01; |
| break; |
| |
| /* this is for interface_number == 1: |
| case LINE6_DEVID_TONEPORT_UX2: |
| case LINE6_DEVID_PODSTUDIO_UX2: |
| ep_read = 0x87; |
| ep_write = 0x00; |
| break; |
| */ |
| |
| default: |
| MISSING_CASE; |
| } |
| |
| line6pcm = kzalloc(sizeof(struct snd_line6_pcm), GFP_KERNEL); |
| |
| if (line6pcm == NULL) |
| return -ENOMEM; |
| |
| line6pcm->volume_playback[0] = line6pcm->volume_playback[1] = 255; |
| line6pcm->volume_monitor = 255; |
| line6pcm->line6 = line6; |
| line6pcm->ep_audio_read = ep_read; |
| line6pcm->ep_audio_write = ep_write; |
| line6pcm->max_packet_size = usb_maxpacket(line6->usbdev, |
| usb_rcvintpipe(line6->usbdev, |
| ep_read), |
| 0); |
| line6pcm->properties = properties; |
| line6->line6pcm = line6pcm; |
| |
| /* PCM device: */ |
| err = snd_device_new(line6->card, SNDRV_DEV_PCM, line6, &pcm_ops); |
| if (err < 0) |
| return err; |
| |
| snd_card_set_dev(line6->card, line6->ifcdev); |
| |
| err = snd_line6_new_pcm(line6pcm); |
| if (err < 0) |
| return err; |
| |
| spin_lock_init(&line6pcm->lock_audio_out); |
| spin_lock_init(&line6pcm->lock_audio_in); |
| spin_lock_init(&line6pcm->lock_trigger); |
| |
| err = line6_create_audio_out_urbs(line6pcm); |
| if (err < 0) |
| return err; |
| |
| err = line6_create_audio_in_urbs(line6pcm); |
| if (err < 0) |
| return err; |
| |
| /* mixer: */ |
| err = snd_ctl_add(line6->card, snd_ctl_new1(&line6_control_playback, line6pcm)); |
| if (err < 0) |
| return err; |
| |
| #ifdef CONFIG_LINE6_USB_IMPULSE_RESPONSE |
| /* impulse response test: */ |
| err = device_create_file(line6->ifcdev, &dev_attr_impulse_volume); |
| if (err < 0) |
| return err; |
| |
| err = device_create_file(line6->ifcdev, &dev_attr_impulse_period); |
| if (err < 0) |
| return err; |
| |
| line6pcm->impulse_period = LINE6_IMPULSE_DEFAULT_PERIOD; |
| #endif |
| |
| return 0; |
| } |
| |
| /* prepare pcm callback */ |
| int snd_line6_prepare(struct snd_pcm_substream *substream) |
| { |
| struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream); |
| |
| if (!test_and_set_bit(BIT_PREPARED, &line6pcm->flags)) { |
| line6pcm->count_out = 0; |
| line6pcm->pos_out = 0; |
| line6pcm->pos_out_done = 0; |
| line6pcm->bytes_out = 0; |
| line6pcm->count_in = 0; |
| line6pcm->pos_in_done = 0; |
| line6pcm->bytes_in = 0; |
| } |
| |
| return 0; |
| } |